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In this paper, we present a query system that has been im-plemented in a practical biological database -GPCRDB.

Summary: Abstract
In this paper, we present a query system that has been im-
plemented in a practical biological database - GPCRDB.
Distinguishing features of this system include: smart query
relaxation and smooth integration of navigation with con-
ventional language-based query functions. Query relax-
ation is required due to the fact that queries are not always
effective (in other words, expected results are frequently not
achieved), particularly in scientific databases like biologi-
cal databases, in which complex domain knowledge is
heavily used. On the other hand, navigation capability is
desired as complex data sets are involved, especially in a
WWW based environment where multiple hyperlinks are of-
ten employed. For efficient implementation, the "fuzzy
equivalence class" concept has been applied that captures
an important type of domain knowledge.
1. Introduction
Biological databases are among the most important
classes of scientific databases. A variety of biological data-
bases has been developed that provide database support for


Source: Aberer, Karl - Faculté Informatique et Communications, Ecole Polytechnique Fédérale de Lausanne


Collections: Computer Technologies and Information Sciences